Thread:Hayds126/@comment-35002745-20180802154217/@comment-32358261-20180804093510

You can’t ever catch mythicals anymore. Most of the time they are gifts.

I think you can catch necrozma just before Elite 4

Not sure on others but I don’t think you can catch any more before post game

You can try catching a beldum on mount hokulani but they are somewhat rare and have a ridiculously low catch rate (as low as many legendary Pokémon)

You could use GTS for one or poke pelago to maybe lure a metang but that’s it